Shock Doctor Adult Ultra Basketball Flavor Fusion Mouthguard Flavor Fusion Technology integrates flavor into specific mouthguard components that delivers you the flavor you crave Bio-fit design for ultimate ease of speaking and breathing during high levels of Basketball activity Gel-fit liner custom molds to teeth for a tight, comfortable fit that helps keep mouthguard in place Form-fit chassis unique bio-mechanical designed shape to fit the natural Dimensions of every Tooth Lower molar integration gel window provide upper and lower jaw molar interlock when clenched for added protection